Cinder collector



March 13, 1945. L L cg 2,371,583

CYINDER COLLECTOR Original FiledMarch 28, 1941 la y! a 7 8 Patented Mar. 13, .1945

{UNITED OFFICE s ommm COLLECTOR Roland L. Lincoln, Dover, Mass, assignor to B. F. Sturtevant Company, Boston, Mass.

Original application March 28, 1941, Serial No. 385,699. Divided and this application January 1, 1943, Serial No. 471,044

1 Claim. (Cl. 183-79) This invention relates to separators for removing solid particles from gases and relates more particularly to primary separators and concentrators for connection to the inlets of induced draft fans for removing cinders therefrom.

This application is a division of my copending application, Serial No. 385,699,, filed March 28,

This invention provides a primary collector and concentrator utilizing direction changing deflectors extending across the face of the gas stream in association with tangential skimmers for removing the solid particles.

A feature of the invention resides in splitting each gas stream for supply into the inlet of an induced draft fan, into two streams with deflectors and skimmers for each of the twostreams.

This provides a compact, efficient space saving ed in a horizontal duct to the inlets of a two inlet,

induced draft fan, and i Fig. 2 is a side elevation of the fan and concentrators of Fig. 1.

The induced draft fan 6 has the two inlets 1 into the fan wheel 9. The horizontal duct I0 conveying the cinder laden flue gas to the fan is divided into two ducts ll. The two similar primary concentrators indicated generally by I3 are inserted between the ducts H and the fan inlet boxes [2, one serving to remove the cinders from the flue gas to one of the fan inlets and the other serving to remove the cinders from the flue gas to the other fan inlet.

The partitions .M extend cross-wise the concentrators l3 causing the gas fiowtherein to be divided into two paths, one around each of the curved ends l5 of the partitions. In advance with respect to gas flow, of the partitions I4, the deflectors I6 are arranged in inverted Vs and extend cross-wise, in plan, the faces of the gas streams entering the concentrators l3, and which extend, in elevation, from the tops IT to the bottoms I8of the concentrators.

On the down-stream side of the partition, the similar deflectors 19 are arranged in VS crosswise the gas stream.

The skimming lips 20 extend into the gas streams on the down-stream side of the partitions l4 and extend from the tops I! to the bottoms l8 of the concentrators; and form with the curved outer walls of the concentrators, tangential skimming channels which discharge .into the cinder collecting passages 2| which extend below the concentrators for connection to a suitable cyclone type secondary collector.

In operation the, gas entering each of the concentrators I3 is divided into two streams by the deflectors l6 and the partition IS, the deflectors being so shaped and placed as to cause the gas to flow in the curved passages between the rounded ends of the partitions and the curved side walls of the concentrators with minimum [turbulence and friction. The cinders are thrown by centrifugal force -into the outer peripheries of these paths, and are skimmed off by the skimmers 20 and deflected into the cinder collecting passages 2|. The down-stream deflectors then straighten out the gas for non-turbulent .flow into the fan inlet boxes l2. The gas entering the fan inlet is free of the cinders which would damage the fan blades if not removed. The gas from the fan wheel 9 passes through the connection 8 to the stack.

The concentrators of this invention are adapted for direct connection to the inlet boxes of induced draft fans and require a minimum of space while forming effective cinder separators.

While the invention has been described for association with induced draft fans handling flue gases containing cinders, other gases containing" other small particles may, of course, be handled.

in other locations- The term cinder is intended to include small particles of any substance.

While anembodiment of the invention has been described for the purpose of illustration,- it should be understood that the invention is not limited to the exact apparatus and arrangement of apparatus illustrated as modifications thereof may be suggested by those skilled in the art without departure from the essence of the. invention.

What is claimed is:

In a dust collector adapted to be connected in a horizontally extending duct and having an inlet and an outlet aligned therewith and having substantially vertical, opposed, curved end walls between said inlet and outlet, and having substantially vertically extending skimmers form- 10 gas flow to said outlet,

flectors arranged in an inverted V with respect to gas flow, between said partition and inlet with apex at the center of said partition, for deflecting the gas from said inlet in curved flow into said curved flow passages, and a second plurality of substantially vertical, curved, spaced deflectors arranged in a V with respect to gas flow, between said partition and outlet with apex at the center of said partition, for straightening out the ROLAND L. LINCOLN. 

